H22powered_94teg

OK, I have a 94ls teg with a H22a in it... Ran fine for the first 6months and then while taking off my amp wire the power wire arced out and fried my main fuse box and. Since then I have replaced the main fuse box in the engine bay, the MAP sensor, the TPS sensor, and the distributor assembly. The idle still surges. I thougth it was the TPS since it stopped when unplugged, but still does it. And when I try to hook up the MSD box it won't stay started and back fires and sputters. Can anyone help me I am at my wits end...